Going back through the encounter descriptions I see this in the first one.
"Beyell climbs steps made from blocks of compacted junk into the converted elevator shaft' The outside is covered with multi coloured metallic panels of different shapes and sizes, and it looks like a high for running the full length of the junkyard wall'.
That 'covered with multi coloured metallic panels of different shapes', line kinda stands out. Are we looking for wrought iron ornamentation inside a building with lots of colorful panels on the outside perhaps? Granted, I can't find one, but maybe it's an idea.